Surveying
The scale of the photography taken from a height of 300 m, with a camera of focal length 15 cm, is

1 : 15,000
1 : 30,000
1 : 20,000
1 : 10,000

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Surveying
The prismatic compass and surveyor’s compass

both give QB of a line and WCB of a line
both give QB of a line
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
both give WCB of a line

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